Maria Leśniak

SUICIDE AND CRISIS RISK DETECTION IN MENTAL HEALTH CHATBOTS: TECHNICAL APPROACHES, SAFETY EVIDENCE, AND GOVERNANCE CHALLENGES

Mental health chatbots built on large language models are now used at population scale, including by adolescents disclosing suicidal thoughts, yet the evidence base supporting them was generated to measure symptom change rather than crisis safety. This narrative review synthesises 43 records published between 2021 and...

Continuity of Vaccination Across the Life Course: Poland in Comparison with Selected EU/EEA Countries and the United Kingdom

Background/Objectives: Vaccination represents one of the most significant achievements of modern medicine and public health. However, the scope, mandatory status, and vaccination coverage vary considerably across European countries. Methods: This narrative review compares selected elements of vaccination programmes in...

Innovative Technologies in Social

The role of the gut–brain axis in the pathogenesis of depression and anxiety disorders: The significance of microbiota, bacterial metabolites, and vagus nerve signalling — A systematic review

The gut–brain axis is a biologically plausible, therapeutically tractable contributor to mood and anxiety disorders, though heterogeneity and causal uncertainty remain.

The Use of Wearable Technology in Monitoring Physical Activity and Training: A Systematic Review

Wearable devices offer acceptable accuracy for step counting and heart rate but not energy expenditure, and standardized validation protocols, algorithmic transparency, and long-term effectiveness studies are needed to maximize clinical and sporting utility.

Sleep Disturbances and Depression: A Narrative Review of the Bidirectional Relationship, Mechanisms, and the Role of Physical Activity

Early identification and treatment of sleep problems, together with promotion of physical activity, may improve outcomes and support depression prevention and the role of physical activity as a modifiable therapeutic factor is summarized.